IRS21091SPBF

Current - Peak Output (Source, Sink):	290mA, 600mA
Base Part Number:	IRS21091SPBF
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Rise / Fall Time (Typ):	100ns, 35ns
High Side Voltage - Max (Bootstrap):	600V
Input Type:	Non-Inverting
Series:	--
Logic Voltage - VIL, VIH:	0.8V, 2.5V
Voltage - Supply:	10 V ~ 20 V
Gate Type:	IGBT, N-Channel MOSFET
Number of Drivers:	2
Channel Type:	Synchronous
Driven Configuration:	Half-Bridge
Part Status:	Active
Packaging:	Tube

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Introduction to IRS21091SPBF

The IRS21091SPBF is a pre-biased, positive current-mode gate driver with a low-side switch and a wide input voltage range. It is designed to drive high side and low side power MOSFETs and IGBTs. This integrated driver operates with superior noise immunity, higher efficiency and low EMI. It is ideal for applications that require high switching speed, such as solar power systems, motor drives, and other applications where the fast switching time ensures proper operation of the system.

Applications of IRS21091SPBF

The IRS21091SPBF is mainly used for driving high side and low side power MOSFETs and IGBTs in solar power systems, motor drives, and other applications where fast switching time is required. Additionally, it can be used in consumer electronic equipment such as AC adapters and home appliances, as well as industrial equipment that must operate under extreme environmental conditions. It is also used in medical imaging systems to reduce the risk of electrical noise interference.

Advantages of the IRS21091SPBF

The IRS21091SPBF offers many advantages, some of which include: high noise immunity, fast switching times, wide input voltage range of 4 V to 42 V, low power consumption, superior EMI performance, and strong surge protection. Additionally, it is pre-biased, which reduces the need for complex gate drive circuitry and saves time and effort during power up.

Working Principle of the IRS21091SPBF

The IRS21091SPBF contains a low-side switch, a wide input voltage range, and current-mode control logic. The low-side switch can be activated by applying a low digital logic signal on the enable (EN) pin and is capable of handling maximum current up to 2 A. Additionally, the current-mode control logic provides fast switching times, superior noise immunity, and high efficiency. When the enable pin is triggered, the high-side MOSFET or IGBT is driven by the low-side switch and the current path is controlled by the current-mode control logic. This allows the rise and fall times of the MOSFET or IGBT to be set based on the current-mode loop.

Conclusion

The IRS21091SPBF is a pre-biased, positive current-mode gate driver with a low-side switch and a wide input voltage range. It is designed to drive high side and low side power MOSFETs and IGBTs and is ideal for applications that require high switching speed. It provides many advantages, such as high noise immunity, fast switching times, and low EMI. Additionally, it operates using current-mode control logic, which allows for the rise and fall times of the MOSFETs and IGBTs to be precisely set.

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